JGS1 Synthetic
High Temperature Heat Resistant Clear 99.99% Pure Fused Quartz Twin Tube
Working Temp: 1100°C continuous
Purity: ≥ 99.99% Pure SiO₂
Precision Catalog & Technical Assemblies
High-Purity Quartzware & Optical Form Factors
Manufactured to microscopic tolerances (±0.005mm) for high-performance UV-Vis spectroscopy, thermal processing, and advanced electrochemical assays in Portugal.
High Thermal
Custom Fused Quartz Glass Circular Cylinder Crucible Tank
Processing: Laser micro-cutting & welding
Resistance: Up to 1300°C short-term
Optical Grade
Circular Fused Quartz Glass XRD Sample Holder Optical Clear
Surface: Optical pitch-polished (λ/4)
Application: X-ray diffraction & analysis
High Pressure
High Pressure Clear Quartz Glass Tube Bending & Welding
Tolerance: OD/ID ±0.05 mm
Feature: Hydroxyl controlled (< 5 ppm)
Threaded UV
Custom High Purity Threaded Transparent UV Quartz Tube
UV Range: 190 nm – 2500 nm
Finish: Precision ground screw thread
Bespoke Bent
Custom U-Bent Quartz Glass Spiral Tube & Precision Coils
Fabrication: Hot flame forming
Geometry: Custom radius & pitch
Semiconductor
High Temperature Resistance Frosted Quartz Disc Plate
Finish: Controlled sandblasting / frosted
Thermal Shock: ΔT > 1000°C resistance
Furnace Grade
Polished Clear Quartz Twin Tube Heater Lab Component
Optical Clear: Fire-polished double bore
Corrosion: Complete acid imperviousness
100%
Verified Response Rate
≤2h
Engineering Feasibility Turnaround
43%
Verified Client Repeat Rate
>82%
UV Transmission @ 200 nm
Engineering Whitepaper · Lisbon Regional Profile
UV Quartz Photometry: Technical Criteria for the Lisbon Scientific Corridor
The metropolitan region of Lisbon, anchored by institutions such as the Champalimaud Centre for the Unknown, Instituto Superior Técnico (IST), and the biopharma manufacturing facilities in Oeiras and Sintra, operates under strict metrological standards. Photometric accuracy in spectrophotometry, fluorometry, and circular dichroism (CD) relies entirely on the optical homogeneity, molecular purity, and precision machining of the sample container: the UV quartz cuvette.
Standard borosilicate or optical glass exhibits an abrupt UV cutoff around 320–340 nm due to internal iron oxide impurities and lattice absorption. In contrast, molecular assays targeting nucleic acids (DNA/RNA absorption at 260 nm), aromatic amino acids in proteins (tryptophan and tyrosine at 280 nm), and active pharmaceutical ingredients (APIs) require transmission deep into the far-UV spectrum. Zunex Quartz employs synthetic fused silica (JGS1), synthesised via vapor-phase axial oxidation of high-purity silicon tetrachloride (SiCl₄). This produces a glass virtually free of metallic contaminants (<1 ppm total), delivering internal transmittance exceeding 82% at 200 nm, extending smoothly down to 185 nm.
Crucial Technical Insight: Unlike standard adhesive-bonded cuvettes that degrade, leak, or exhibit autofluorescence under aggressive organic solvents (such as chloroform, dimethyl sulfoxide, or concentrated perchloric acid), Zunex cells utilize high-temperature molecular fusion. The optical windows are molecularly bonded without organic resins, ensuring absolute integrity across extreme pH ranges (pH 0 to 13.5) and thermal shock cycles.
For Portuguese research teams performing spectrofluorimetry, pathlength parallelism and optical orthogonality are decisive. When laser excitation strikes a non-parallel face, internal reflections cause phase distortion and stray-light leakage, generating phantom fluorescence readings. Our computerized flame polishing and CNC surface grinding maintain a wavefront distortion below λ/4 across the optical aperture, ensuring reproducible, peer-review-grade spectral baselines.
Material Grade Transmission Matrix
Selection guide for laboratory directors and procurement specialists across Lisbon research departments.
| Grade | Useful Spectrum | OH Content | Primary Lisbon Lab Application |
|---|---|---|---|
| JGS1 Synthetic | 185 nm – 2500 nm | < 20 ppm | Deep UV spectroscopy, Oligonucleotide quantification, CD polarimetry |
| JGS2 Optical | 220 nm – 2500 nm | < 150 ppm | Routine UV-Vis photometers, Environmental water quality testing, QC sight windows |
| JGS3 Low-OH | 260 nm – 3500 nm | < 5 ppm | Near-infrared (NIR) spectrometry, FTIR analysis, High-heat furnace viewports |
Compliance with European Quality Protocols
Our factories produce quartz optical cells strictly complying with DIN 58963 and ISO standards for laboratory glassware, ensuring seamless interchangeability with Agilent, Shimadzu, Thermo Scientific, and PerkinElmer spectrophotometer sample holders.
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Regional Industrial Ecosystem
Lisbon Market Dynamics: Trends & Research Infrastructures
Analyzing key drivers of advanced quartz component consumption across the Lisbon metropolitan area and the Tagus Valley industrial axis.
Life Sciences & Biotech Expansion
Lisbon has become a premier southern European hub for clinical trials, biomanufacturing, and immuno-oncology research. Institutions in the Taguspark science zone and universities demand ultra-micro UV cuvettes (sample volumes down to 10 μL) for measuring protein aggregation and micro-volume DNA extraction without cross-contamination.
Renewable Energy & Thin-Film Research
Portugal's ambitious carbon-neutral goals have energized photovoltaic research at INESC MN and the National Laboratory of Energy and Geology (LNEG). Quartz tube furnaces, transparent wafer boats, and optical quartz plates serve in atomic layer deposition (ALD) and thin-film perovskite characterization.
Viticulture & Food Analytics Modernization
The agricultural laboratories surrounding the Lisbon and Alentejo viticulture regions rely on automated flow-through quartz cuvettes for enzymatic analysis, phenolic indexing, and organic acid profiling, requiring optical durability against continuous liquid rinse cycles.
Precision Factory Benchmarks
Why Lisbon Research Teams Partner Directly with Zunex
Combining Donghai raw crystalline mineral dominance with advanced micro-machining and strict global delivery chains.
Crystal Capital Raw Materials
Situated in Donghai County, China's quartz capital, Zunex controls raw material synthesis directly from origin. We refine high-purity natural silica sand (≥99.99% SiO₂) and synthetic silicas, eliminating metal-cation impurities (Fe, Ti, Al, Cr) that compromise UV transmission.
Advanced Laser Micro-Machining
Our workshop integrates specialized CO₂ and ultrashort pulse laser finishing systems. We execute micron-tolerance drilling, micro-fluidic grooving, slotting, and edge-bevelling with minimal micro-cracking and stress-free annealing for vacuum and high-pressure setups.
Direct Engineering Feasibility
Avoid sales-intermediary delays. Our technical desk reviews STEP, DWG, and PDF drawings directly. Lisbon engineers receive verified manufacturing reports with thermal load limits and optical transmission spectra in two hours or less.
Strict Export Packaging for Trans-Continental Delivery
Quartz glass is fragile; shipping to Humberto Delgado Airport (LIS) or the Port of Lisbon demands bespoke multi-layer shock mitigation. Every batch of cuvettes, reaction crucibles, or quartz tubes is encased in high-density customized foam inserts, vacuum-sealed against moisture, and packaged in reinforced wooden crates with tilt indicators.
Procurement Intelligence
Frequently Asked Questions by Lisbon Technical Buyers
Detailed answers addressing lead times, optical performance, custom specifications, and EU import procedures.
What is the exact distinction between JGS1, JGS2, and JGS3 quartz cuvettes?
JGS1 is synthetic fused silica produced from pure silicon chemicals. It has zero bubble inclusions and high deep-UV transmission (185–2500 nm), making it critical for far-UV biochemistry, circular dichroism, and fluorescence experiments. JGS2 is optical grade fused quartz made from natural crystal, offering great UV-Vis transmission (220–2500 nm), suitable for standard laboratory photometers. JGS3 is an infrared-grade material with exceptionally low hydroxyl (OH < 5 ppm) content, preventing unwanted water absorption bands between 2600–2800 nm, engineered specifically for IR and NIR spectroscopic instrumentation.
Can Zunex fabricate customized cuvettes, micro-flow cells, or wafer holders to proprietary CAD drawings?
Yes. Bespoke OEM fabrication according to client drawings is our core focus. We work directly from PDF, DWG, DXF, or 3D STEP files. Whether your laboratory requires non-standard optical pathlengths (e.g., 0.1 mm, 2 mm, 50 mm), specialized screw-thread caps with PTFE septa, water-jacketed temperature control chambers, or laser-drilled microfluidic ports, our engineering team confirms dimensional tolerances and quotes within two hours.
How do you manage customs clearance, VAT, and logistics into Portugal?
We provide full Incoterms flexibility, ranging from EXW and FOB to CIF, DDU, and DDP Lisbon. For universities and private institutes with designated customs brokers, we issue all necessary documentation, including HS code classifications (typically 7017.10 for quartz laboratory glassware), commercial invoices, and certificates of origin. For rapid door-to-door deliveries, we partner with DHL Express and FedEx with delivery tracking, arriving in Lisbon typically within 4 to 6 business days after production completion.
What are the chemical resistance limits when cleaning Zunex UV quartz cuvettes?
Because our cuvettes are manufactured through high-temperature fusion rather than adhesive bonding, they show total resistance to aqua regia, nitric acid, hydrochloric acid, and concentrated organic solvents (ethanol, acetone, DMSO, toluene). The only chemicals that etch or attack fused quartz are hydrofluoric acid (HF), hot concentrated phosphoric acid above 150°C, and strong alkaline solutions (pH > 13) at elevated temperatures. Routine laboratory cleaning with sonication in mild detergent or 3M nitric acid soak will not delaminate or alter optical transmission.
What is your minimum order quantity (MOQ) for prototypes and pilot research batches?
We support academia and scientific innovation by offering flexible low-volume runs. Standard catalog cuvettes and optical windows have an MOQ of just 2 pieces. For fully customized quartz components requiring dedicated CNC tooling or hot-forming jigs, the MOQ is typically 1 to 5 pieces for prototype verification before scaling to volume production batches.
Accelerate Your Lisbon Lab Research with Direct Factory Precision
Connect with Zunex senior optical engineers today. Receive comprehensive technical review, formal quotation, and transmission data sheets in two hours or less.